Vaporizer



April 21, 1925. 1 1,534,290

I s. M.. UDALE I VAPORIZER Original Filed March 14, 1921 K n F FIGPE AINYENTOR v )ATTORNE'Y Patented Apr. 21, 1925.

UNITED] STATES v v 1,534,290 PATENT OFFICE.

STANLEY M. 'UDALE, OF DE'IIQOIT, MICHIGAN.

VAPORIZEB.

Application filed March 14, 1921, Serial no. 452,053. Renewed June 9,1524. i

To'all whom it mag concern:

Be it known that I, STANLEY M.UDALE, a

citizen ofthe United States, and residing at Detroit, in the county ofWayne and State of Michigan, have invented a new and Improved Vaporizer,of which the following is Fig. 1 shows diagrammatically the improvedmeans for vaporization.

ternal combustion engine.

Description.

In Fig. A is the float chamber supplying fuel to the fuel nozzle B whichdelivers into the smaller conduit C. This conduit leads into the largerconduit F at the throat of the venturi D, and B when the rich mixturedelivered from O isdiluted by air admitted. by the throttle E into thelarger conduit F. The conduit C lies within the exhaust jacket G which,ther'eby heats the fuel drawn through C and causes vaporiza- ,tiontotake place before the fuel issues into D. Compensating means areprovided in the form of the tube H which leads from the inlet manifold Fto the float chamber A. The outlets L and L of the conduit C adapt thedevice for use with a four cylinder engine of orthodox design.

In Fig. 2 the same letters without the prime, refer to similar parts inFig. 1. An inlet valve of the engine is shown at K and the exhaust valveat J.

Operation I On closing the throttle when running slowly considerablesuction is developed in the tube C which causes fuel to be aspiratedfrom the nozzle B. In order topreventexcessive fuel being aspirated thecompensat- On openingthe throttle the pressure in the float chamber Aincreases as the vacuum in the inlet manifold F decreases and theincreased flow of fuel through the venturi D causes an increased flow offuel through the vapor tube C" thereby delivering an in creased quantityof vapor, thus compensat ing for the increased amount of vapor ad mittedby the throttle E.

bodying the present invention, by reason of the fact that'the pure airwithin the intake manifold is first drawn into the engine cylinder andis subsequently followed by Fig. 2 shows the device applied to an in thevaporized fuel and rich mixture from the rich-mixture outlet L. Thebeneficial results of stratification in increasing mileage are wellknown, the explanation generally adopted being that it enables a highermixture which is'sufliciently dilutedby the air to be explosive. Theincrease in fuel economy thereby obtained is quite large.

1. In a vaporizer internal combustion engines, the combination of a fuelreceptacle and a fuel nozzle connected thereto, means for mixing airwith the fuel at said nozzle,'an exhaust passage for the engine,;anintake manifold for the engine having. discharge openings and an airinlet, a throttle valve in said air inlet, and

a fuel passage leading from the fuel nozzle through the exhaust passageand then forking, one branch extending to each discharge opening of theintake manifold.

2. In a vaporizer for supplying fuel to internal combustion engines, thecombination of a fuelreceptacle and. a fuel nozzle'connected thereto,means for mixing air with the fuel at said nozzle, an exhaust passagefor the engine, an intake manifold for the engine having dischargeopenings and an air inlet, a throttle valve in said air inlet, and afuel passage leading from the fuel nozzle through theexhaust passage andthen forking,one branch extending to each discharge opening of theintake manifold, said intake manifold being formed with venturis at thedischarge ends of the branches of the fuel passage. 3. In a vaporizer.for supplying fuel to for supplying fuel to" internal combusion engines,the combination the outlets of the heated rich-mixture passage beinglocated solely in each of the discharge openings of the inlet manifold16 whereby the outlets for the heated rich mixture are subjected to thefull suction of the engine.

STANLEY M. UDALE.

